Discontinued Operations - Narratives (Details) - Spinoff - Exterran Corporation - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2019
Discontinued Operations
Proceeds under terms of separation and distribution agreement	$ 700	$ 18,700
Deferred tax liabilities	7,868		$ 8,508
Indemnification asset	$ 7,868		$ 8,508

Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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